In the Sabre dac app note, ESS recommends inverted MCLK when that's synchronous, although they only says
"The inverted MCLK ensures that the Sabre noise as low as possible." and there's no further explanations.

Anyone tried these?

As far as I tried myself, (I stolen MCLK from transport via LVDS and made inverted at the LVDS receiver input.)

Hi, wktk_smile,

I'm not sure that this information has something to do with your interest.
The following Japanese web page by a DAC designer reported a possible noise. You may understand the contents written in Japanese language.